Gordon y



G. Y. GRAY.

l Bake Oven.

No. 88,472. Patented 811808381888.

N. PETERS. Fhuto-Lilhogmphnr. washington, D. C4

55eme Elaine GQRDOYN Y, GRAY, OF NILES, M l'CI-IIGAN.`

Leners raam No. 88,472, daad M11/rc1` 3o, 1869.

OVEN.

The Schedule referred to in these Letters Patent and making parl: of the same.

To all whom it may concern Be it known that I, GORDON Y. GRAY, of the city-of Niles, county of Berrien, and State of Michigan, have invented. a new andv useful Improvement in- Bakers Ovens, `applicable, to the baking of all kinds of breadws'tuiis; and I do hereby declare that the following is a full and exact description thereof, which will enable others skilled in the art tO make and use thev same,

reference being had -to the accompanying drawings, forming part of this specilication, and to the letters of reference marked thereon.

Figure lis au exterior view of' my improved bakers oven.

'Figure 2 is a vertical or transverse section of the same."

Figure 3 is a longitudinal section of said oven. The'nature of my invention consists;`

First, iu an elongated chamber, as shown in iig. 1," A the walls of which are composed of slabs of stone, brick and mortar, `or other suitable matem'al, having one or more openings at or uearits base, as shown by letters E and E, iu iig. 1, for the introduction of wood, coal, or other-'suitable combustible material, furthe purpose of `beating the same, having, also, an opening in the upper wall, or roof', for an escape, or draught-fine, as

shown by letter D, in iig. 2, and having, also, a chimney at or near its centre, as shown by letter S, fig. l

and y Second, the construction cianelongated oven, as

-shown by letters O and O, figs. 2 and 3, composed of a silicate of magnesia, commonly called soapstoue, which Oven is of the same length as the elongated chamber j -represented in iig. 1, and which is so suspended, or supported inthe chamber above mentioned, with or by v iron rods, or other suitable device, as to allow 'a slidicient space between the walls of the oven and the walls of the chamber toI admit of the free 'passage of hot air, for .the purpose Of heatingthe oven, as is shown in iig. 2; B B being the walls'foi'the chamber, UO representing'the walls of the Oven, andF F showing the space for the admission of the heated. air between the several walls ofthe chamber 'and the oven; .and

Third, in the construction of an endless apron, or cara rier, composed of wire cloth, or othersuitable non-combustible matelial, running upon Vrollers,or cylinders, composed of wood, metal, or other, suitable material, arranged at either end of the oven, so'that a revolution-oi' the rollers will cause the apron, or carrier to pass continuously through the oven, as is shown in iig.

3, the letters A A representing the apron, or carrier,

and the letters R R, the rollers.-

By meansof two spaces of the same widthas the carrier, in either end of the oven, theapron, or carrier,

is permitted to pass entirely through the oven and re turn, so that crackers, Or other articles requiring to be baked, being placed on the apron, or carrier, letter A,

iig. l, on the outside of the oven, are carried into it-'by means ofthe moving of the apron, or carrier, are subjected tothe heat of the oven, and are delivered on the outside of the oven, at its further end, properly baked. The rollers aresnpport'ed, and kept in position, by braces, as shown in iig. l, the letters a c i'eplsenting the braces, one end of which is fastened to theend wall of the chamber, and in the other end of'the brace the axles ofthe rollers play. Thisbracela's'is a-slfby"'wlichthe-rllers may he moved toward or from the oven', thus loosening dr tightening the apron, or carrier, as occasion may require. j

The rollers may be revolved by a common crank, as

represented by the letter K, in iig. 1, o1' a shaft and pulley'may bel attached to the 'axles of either roller.

The apron, or carrier A A, figs. 2 and 3, being composed of wire cloth, or other open-work material, al-

lows the heat to reach the under side of the object to be baked, unobstructedly, and it is thus baked on each side alike. f'V

It will be readily seen the upperl apertures in the endsof the oven can be made adjustable, s that objects of any necessary size beingl ou the apron, or car- .'rier, are allowed to pass, through the aperture, into the oven, and-also out of it.V

Iv am aware that'patents were issued for a mechanical bakery, to"W.-'R.v Nevins and others, prior to my invention, and, therefore, I do not claim thefe'atures shown vby them; but, having described my improved A mechanical bakery, consisting of an oven, O, enclosed within the walls B, with a continuous intervening flue, E, and having the endless apron A, arranged to move through the oven O, substantially as shown and described'.`

Witnesses:

J AMES H. FAIBCHILD, F. M. GRAY.

GORDON Y. GRAY, f 

